cheap air valve design - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 11-29-2007, 09:01 AM   #1
Registered Member
 
lunarhighway's Avatar
 
Join Date: Dec 2006
Posts: 360
Country: United States
cheap air valve design

would this work?

i'm seriously considdering building a water injection kit, based on Ron Novak's design. Yet being the cheapo that i am i don't fancy running of buy an expensite valve for a project that might not work in the end.

yet i figured i might place the controle valve at the air intake of the water container rather than in the vacuum line going to the engine
what i had in mind was this



it's the simplest adjustable valve system i could come up with.

basically i intend to take a big bolt and saw a slot in it.

than i'd attach a nut to the intake of the water reservoir, by screwing in or out the bolt i could regulate the opening. i'm thinking of a fairly large bolt with a thin diagonal slot cut into it, but i might just saw trough it sraight from the top. placing a rubber ring betwean the two components would allow for a perfect closure when needed.
__________________

__________________

lunarhighway is offline   Reply With Quote
Old 11-29-2007, 09:09 AM   #2
Registered Member
 
trebuchet03's Avatar
 
Join Date: Mar 2007
Posts: 812
Country: United States
Send a message via AIM to trebuchet03
I'd personally put the valve on the side that goes to the engine... As a fail safe. Should your container get an air leak, that valve won't stop anything if it's on the air intake side

When I was experimenting, I used a 1/8" $3 brass needle valve with compression fittings from [pick your favorite home improvement store] <-- just a heads up if you were only finding $20 valves and such.
__________________

__________________
Time is the best teacher. Unfortunately it kills all its students.


Bike Miles (Begin Aug. 20 - '07): ~433.2 miles

11/12
trebuchet03 is offline   Reply With Quote
Old 11-30-2007, 05:20 AM   #3
Registered Member
 
ZugyNA's Avatar
 
Join Date: May 2006
Posts: 587
Country: United States
Been there...tried that. If testing water injection using vacuum...you will have trouble finding a valve that will meter down as far as you want.

Best bet is a model airplane gas valve.

Or a typical hardware store undersink type valve could be used if it is set up like the valves on the FA2000...where a long bar is attached to the handle and it is adjusted using a locking screw.

I tested using a marked jar in the pass seat so I could watch the flow rate visually. Managed to put about a qt thru a 1.5L engine in 50 miles though. Did no harm...cleaned the carbon out real well though.

I was using MMoil as a top lube. <<<<<<<<<<<<
__________________
Leading the perpetually ignorant and uninformed into the light of scientific knowledge. Did I really say that?

a new policy....I intend to ignore the nescient...a waste of time and energy.
ZugyNA is offline   Reply With Quote
Old 11-30-2007, 05:31 AM   #4
Registered Member
 
lunarhighway's Avatar
 
Join Date: Dec 2006
Posts: 360
Country: United States
ok thanks for the advice, i'll look for some more suitable valves than.

ZugyNA did you have any good experiences with water injection, other than cleaning the engine?
__________________

lunarhighway is offline   Reply With Quote
Old 12-01-2007, 01:59 AM   #5
Registered Member
 
ZugyNA's Avatar
 
Join Date: May 2006
Posts: 587
Country: United States
With a carbed engine I didn't see a mileage gain and lost some power. But I think you need to tweak other things like ignit timing and so forth too. I was just dripping the water into the intake at about a 2% rate (2% of gas used)...not misting it.

I've used the model plane valve to try and inject various liquids from windshield washer fluid to acetone...flow rate is very variable depending on the surface tension and viscosity of the fluid. Finding it hard to get a consistent flow even with the same fluid.
__________________
Leading the perpetually ignorant and uninformed into the light of scientific knowledge. Did I really say that?

a new policy....I intend to ignore the nescient...a waste of time and energy.
ZugyNA is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Incorrect Milage Calcuatlion PatM Fuelly Web Support and Community News 4 07-17-2009 08:21 PM
'93 Civic Si hatch D16Z6 engine w/ VX transmission? cems70 General Maintenance and Repair 11 06-03-2009 03:50 PM
Gallons per Mile? nerb Fuelly Web Support and Community News 1 11-12-2008 04:33 AM
Throttle spring...pedal vs RPM? ZugyNA General Fuel Topics 17 08-01-2006 05:17 PM
The medical system is bulls**t Compaq888 General Discussion (Off-Topic) 4 06-19-2006 10:06 AM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 05:06 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.